Method for on-demand routing of mobile self-organizing network based on link quality

A mobile self-organizing, on-demand routing technology, applied in network topology, electrical components, wireless communication, etc., can solve the problems of lack of on-demand routing protocol, difficulty in sensing the optimal link, etc., to achieve tracking maintenance and improve response. effect of speed

Inactive Publication Date: 2013-11-27
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

The advantage of the on-demand routing protocol is that it does not need to periodically broadcast routing information, which saves limited network resources; the disadvantage is that when sending data packets, if there is no route to the destination node, the route discovery process must be started to find the route, so the data Grouping needs to wait for a certain time delay

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  • Method for on-demand routing of mobile self-organizing network based on link quality
  • Method for on-demand routing of mobile self-organizing network based on link quality
  • Method for on-demand routing of mobile self-organizing network based on link quality

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Example Embodiment

[0034] Example

[0035] figure 1 It is the topology diagram of the mobile ad hoc network based on the TCP / IP protocol in the embodiment. In this embodiment, the mobile ad hoc network includes 4 nodes, each circle represents a node, where a number represents a node number, each edge represents a direct link, and the value represents a data packet delivery rate. It can be seen that in this embodiment, the adjacent nodes of node 1 are 2, 3, the adjacent nodes of node 2 are 1, 3, the adjacent nodes of node 3 are 1, 2, 4, and the adjacent nodes of node 4 are 3. .

[0036] The following is based on figure 1 The shown mobile ad hoc network describes in detail the on-demand routing method of the mobile ad hoc network based on link quality of the present invention. The present invention includes the following steps:

[0037] S1: Every active node i every T after joining the network 0 Broadcast a HELLO message in seconds, including the message type and the node address, and at the same tim...

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Abstract

The invention discloses a method for on-demand routing of a mobile self-organizing network based on link quality. The method aims at solving the problem that a most reliable route can not be found through the mobile self-organizing network on-demanding routing algorithm based on the number of shortest routes; the wireless link quality is converted into a route discovery priority and then is further converted into route discovery time delay; a source node and each intermediate node send a routing request message to each adjacent node according to time delay; when each node receives the routing request message for the first time, the routing request message is transmitted, and the routing request message received next time is directly abandoned, so that the phenomenon that a route with the optimal link state is chosen to be a routing path is guaranteed. According to the method, the optimal routing can be found in the mobile self-organizing network. In addition, on the basis of route discovery, the scheme of route state maintenance is added so that a failure node and an unstable link in the mobile self-organizing network can be found and update of the optimal routing can be achieved conveniently in real time.

Description

technical field [0001] The invention belongs to the technical field of network routing, and more specifically relates to an on-demand routing method for mobile ad hoc networks based on link quality. Background technique [0002] The mobile ad hoc network is a multi-hop wireless communication network that is composed of several mobile communication nodes without fixed settings and can be quickly established. Mobile ad hoc networks have the characteristics of dynamic changes in network topology, self-organizing without central nodes, and limited wireless transmission bandwidth. Due to the rapid change of the mobile ad hoc network topology, the limited channel bandwidth, and the high probability of network splitting temporarily, the commonly used routing algorithm based on the number of routes is difficult to apply to the mobile ad hoc network. To achieve reliable and stable wireless multi-hop routing must Research on dedicated routing protocols, the existing routing protocols...

Claims

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Application Information

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IPC IPC(8): H04W40/12H04W84/18
Inventor 王海南李立萍魏平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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